Praseodymium

• http://periodic.lanl.gov/59.shtml
• Atomic #: 59
• Atomic Mass: 140
• Protons: 59
• Electrons: 59
• Neutrons: 81
• Peroid:
• Praseodymium melting point is 935*C and boiling point is 3520*C
• State is soild.
• Colour of element is grayish white.
• A swedish chemist Carl Gustav Mosander discoverd the element Praseodymium. It was found in 1841.
• It's not flammable.
• Praseodymium has a reaction when its exposed to air, it has a green oxide coating that spalls off it.